ALAMEDA — The Raiders continued to value versatility Saturday in assembling a draft class that expanded from seven to 10 players with a pair trades designed to add a few more long shots to the roster.

Jon Feliciano, a Miami offensive lineman who will compete at right guard but has also played center and tackle, came in the fourth round at No. 128. Kansas linebacker Ben Heeney, primarily a middle linebacker but who can also play outside, was a fifth-round pick at No. 140 along with Florida linebacker Neiron Ball at No. 161.

Ball, Morris and McDonald were all drafted with picks obtained when the Raiders dealt No. 102 to Carolina for No. 124, then moved back again to No. 128 in a trade with Tampa Bay.

The Raiders drafted Alabama wide receiver Amari Cooper with the fourth overall pick Thursday night and then on Friday took Florida State defensive end Mario Edwards Jr. in the second round (No. 35) and Miami tight end Clive Walford in the third (No. 68).

Raiders coach Jack Del Rio conceded players picked in the later rounds were there for a reason and have something to prove but was pleased overall and looking forward to seeing how the evaluation process translates to the field.

“I’m more worried about how we grade out in September when we start playing games,” Del Rio said. “I know it was a good, solid effort … an excellent weekend for us and just one step along the way in the process of building this organization back where it belongs.”

Players taken within the first five rounds had multi-faceted skills. Cooper was the most well-rounded receiver in the country, Edwards can play both tackle and end, Walford is an old-school block-and-catch tight end and Feliciano, Heeney and Ball have the ability to play more than one position.

“These guys are capable of being more than just a guy that’s limited to one specific role, one specific situation where they can thrive,” Del Rio said. “That helped them in terms of their status with us.”

Of the four players taken in the sixth round or later, Debose’s talent returning kicks and punts (he had five touchdowns at Florida) give him the best chance to get on the field rather than be a fringe player or practice squad candidate.

Feliciano, whose back-story at Miami includes growing up in poverty and seeing his mother wage two battles with cancer, immediately connected with offensive line coach Mike Tice at the scouting combine.

“This was one of the top spots for me to go,” Feliciano said. “To hear my name called by them is just unbelievable.”

Feliciano will get a chance to compete for the vacant right guard spot but will also get a look at center, as the only other center backing up free agent Rodney Hudson is veteran Kevin Boothe.

“Jon pulls well already, I’m excited to add him to the mix,” Tice said. “It’s going to be good for our room. I’m sure there will be some guys’ feelings hurt, but that’s OK.”

Heeney should make an immediate contribution on special teams, will compete to back up Miles Burris in the middle behind Curtis Lofton and can also play outside. During the draft process, Heeney hadn’t heard a peep out of the Raiders.

“I think I can start on every special team right away and become a contributing factor on defense,” Heeney said. “(The Raiders) caught me totally off guard. I had no idea, but I couldn’t be happier.”

Florida’s Ball missed the 2011 season following brain surgery unrelated to football and also had knee and sports hernia surgery. He received several phone calls from Raiders linebackers coach Sal Sunseri and special teams coach Brad Seely.

“I’ve gotten over all those injuries. I’ve moved on,” Ball said. “Those things are in the past, but they made me better.”

Del Rio characterized Valles, Morris and Debose as players with something to prove. Valles played outside linebacker in college but the Raiders will look at him as an end.

Among the undrafted reportedly agreeing to terms with the Raiders include Fresno State wide receiver Josh Harper and Nevada quarterback Cody Fajardo.